We consider a real time data acquisition and processing multiserver system with identical
servers (such as unmanned aerial vehicles, machine controllers, overhearing devices, medical monitoring units,
etc.) which can be maintained/programmed for different kinds of activities (e.g. passive or active). This system
provides a service for real time tasks arriving via several channels (such as surveillance regions, assembly
lines, communication channels, etc.) and involves maintenance.
We focus on the worst case analysis of the system with shortage of maintenance teams, exponentially distributed
time to failure and maintenance times. We consider the model with nonpreemptive priorities and provide
balance equations for steady state probabilities and various performance measures, when both operation and
maintenance times are exponentially distributed.